Good laboratory practices essential for supplement testing labs – podcast

Supplement testing labs that follow GLPs show a standard of quality that helps ensure reliable and consistent test methods, says lab expert Jen Johansen.

Sandy Almendarez, VP of Content

September 27, 2019

Good laboratory practices (GLPs) may not be legally required in full for supplement testing labs to follow in the U.S., but they are best practices that quality brands should demand of their contract lab partners. As Jen Johansen, vice president of quality, regulatory and government affairs, Cyanotech Corp., explains, GLPs are a set of principles and requirements for testing procedures, facilities, personnel, methods and references standards. GLPs are part of a larger quality system to ensure test results are reliable and consistent. While GLPs are not outlined in full in the dietary supplement regulations, sections of the mandated GMPs (good manufacturing practices) overlap with GLPs. In this podcast with Sandy Almendarez, editor in chief, Natural Products INSIDER, Johansen covers GLPs as well as:

  • Resources supplement brands can use to help them choose the best test methods and reference standards for their products

  • How brands must double-check their contract lab’s precision if the products will carry third-party certifications

  • How often to conduct—and what to look for during—a requalification of current testing lab partners.

Johansen is speaking at the SupplySide Workshop “Trust in Testing: Contract Labs for Safe, Compliant Supplements” on Thursday, Oct. 17 at  to 4 p.m. This session is underwritten by American Testing Lab, Eurofins Scientific, Micro Quality Labs Inc. and New Jersey Labs.

About the Author(s)

Sandy Almendarez

VP of Content, Informa


• Well-known subject matter expert within the health & nutrition industry with more than 15 years’ experience reporting on natural products.

• She cares a lot about how healthy products are made, where their ingredients are sourced and how they affect human health.

• She knows that it’s the people behind the businesses — their motivations, feelings and emotions — drive industry growth, so that’s where she looks for content opportunities.

Sandy Almendarez is VP of Content for SupplySide and an award-winning journalist. She oversees the editorial and content marketing teams for the B2B media brands Natural Products Insider and Food and Beverage Insider, the education programming for the health and nutrition trade shows SupplySide East and SupplySide West, and community engagement across the SupplySide portfolio. She is a seasoned content strategist with a passion for health, good nutrition, sustainability and inclusion. With over 15 years of experience in the health and nutrition industry, Sandy brings a wealth of knowledge to her role as a content-focused business leader. With specialization in topics ranging from product development to content engagement, creative marketing and c-suite decision making, her work is known for its engaging style and its relevance for business leaders in the health and nutrition industry.

In her free time, Sandy loves running, drinking hot tea and watching her two kids grow up. She brews her own “Sandbucha” homemade kombucha; she’s happy to share if you’re ever in Phoenix!


Speaker credentials

Resides in

  • Phoenix, AZ


  • Arizona State University


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